Changes for issue: https://github.com/signalpoint/DrupalGap/issues/141
Commenting fields displayed in console log
Removed Node Body as it was repeating . Also sorted issue for options_select widget type
Merge branch '7.x-1.x-alpha' of https://github.com/amitsedai/DrupalGap into amitsedai-7.x-1.x-alpha
#157. Added drupalgap_field_key(). Changed drupalgap_entity_build_from_form_state() to use the field key when setting the value. Changed _image_field_form_submit() to set the field name form state value equal to the file id. Changed drupalgap_node_assemble_data() to iterate over fields and assemble the data string using the proper key for the field type.